13. [aqueous Solutions] Practice

9 Questions | Total Attempts: 69

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13. [aqueous Solutions] Practice

Questions and Answers
  • 1. 
    a.) Why doesn't vegetable oil dissolve in water?
    • A. 

      Water is a polar molecule while oil is nonpolar.

    • B. 

      Water is a nonpolar molecule while oil is polar.

    • C. 

      Both molecules are nonpolar.

    • D. 

      Both molecules are polar.

  • 2. 
    b.) To help dissolve a solute, we can add heat.  This tells us that the process of dissolving a solute is...
    • A. 

      Endothermic.

    • B. 

      Exothermic.

    • C. 

      Isothermic.

  • 3. 
    c.) Which of the following is the BEST electrolyte?
    • A. 

      Salt water

    • B. 

      Sugar water

    • C. 

      Pure water

    • D. 

      Carbonated water

  • 4. 
    D.) Which of the following happens when salt is added to water?
    • A. 

      The boiling point increases.

    • B. 

      The freezing point decreases.

    • C. 

      The vapor pressure decreases.

    • D. 

      All of the above.

  • 5. 
    e.) According to the solubility curve shown here, how many grams of sodium chloride could you dissolve in 100 mL of water at 10 degrees?
    • A. 

      35 g

    • B. 

      10 g

    • C. 

      30 g

    • D. 

      80 g

  • 6. 
    f.) Tom dissolves 20 grams of potassium chloride in 100 mL of water at 30 degrees.  According to the solubility curve, this solution can best be described as...
    • A. 

      Unsaturated.

    • B. 

      Saturated.

    • C. 

      Supersaturated.

  • 7. 
    g.) If I dissolve 20 grams of sodium chloride in 100 mL of water, what is the concentration of my solution?
    • A. 

      5 M

    • B. 

      0.2 M

    • C. 

      0.34 M

    • D. 

      3.4 M

  • 8. 
    h.) If Harriet wants to create 250 mL of a 0.5 M CO2 solution, how many grams of CO2 must she dissolve?
    • A. 

      125 g

    • B. 

      2.8 g

    • C. 

      0.55 g

    • D. 

      0.125 g

  • 9. 
    i.) 200 mL of water were added to 150 mL of a 2 M Kool Aid solution.  What is the new concentration?
    • A. 

      0.86 M

    • B. 

      1.5 M

    • C. 

      0.01 M

    • D. 

      2.7 M

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